한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제23권1호
  • /
  • Pages.45-53
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  • 2006
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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EPS, SAN, HIPS를 이용한 직접 메탄올 연료전지용 고분자 전해질 막의 제조 및 그 특성에 관한 연구

A Study on the Characteristic and Preparation of PEM for DMFC using EPS, SAN, HIPS

  • 송주영 (창원대학교 화공시스템공학과) ;
  • 김희열 (창원대학교 화공시스템공학과) ;
  • 김종화 (창원대학교 화공시스템공학과) ;
  • 이수 (창원대학교 화공시스템공학과)
  • Song, Ju-Yeong (Dept. of Chemical Engineering, Changwon National University) ;
  • Kim, Hi-Youl (Dept. of Chemical Engineering, Changwon National University) ;
  • Kim, Jong-Hwa (Dept. of Chemical Engineering, Changwon National University) ;
  • Lee, Soo (Dept. of Chemical Engineering, Changwon National University)
  • 발행 : 2006.03.31
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초록

In this study, we prepared porous cation exchange membrane using polystyrene such as, EPS (expanded polystyrene), SAN (styrene acrylonitrile copolymer) and HIPS (high impactive polystyrene). These polystyrenes were sulfonated by acetyl sulfate to make porous cation exchange membrane such as, SEPS, SSAN, SHIPS. SEM was employed to confirm porous structure of membrane, and IR spectroscopy was used to confirm sulfonation rate of ion exchange membrane. Water and methanol content were also increased with amount of sulfuric acid in reactants. SSAN-20 showed the highest value in water and methanol content. Fixed ion concentration and conductivity was also increased with an amount of sulfuric acid in reactants. Methanol permeability for SEPS-20, SSAN-20, SHIPS-20 was found to be $1.326\;{\times}\;10^{-5}\;cm^2/s$, $1.527\;{\times}\;10^{-5}\;cm^2/s$ and $1.096\;{\times}\;10^{-5}\;cm^2/s$ respectively. From the result of electrodialysis experiment in 0.03 M $Pb(NO_3)_2$ aqueous solution, anion exclusion and cation selection effects were confirmed.

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